Laser Welding of UNS S33207 Hyper-Duplex Stainless Steel to 6061 Aluminum Alloy Using High Entropy Alloy as a Filler Material

The high entropy alloy (HEA) filler used during the fabrication method determines reliability of HEAs for steel-aluminum dissimilar configuration. have a direct impact on formation intermetallic compounds (IMC) formed by interaction iron (Fe) and aluminum (Al), influence size joint’s zone. A novel welding process Fe-Al joints was developed to prevent development brittle iron-aluminum interface. This research involved investigation possibility using HEA powdered filler. Fe5Co20Ni20Mn35Cu20 as laser joining lap configuration hyper-duplex stainless steel UNS S33207 6061. has unique properties, such strength, good ductility, resistance corrosion wear. tiny portion stainless-steel area melted varying parameters. high-entropy with slow kinetic diffusion large employed aid in producing solid solution structures, impeding blending particles hindering IMCs. weld seam created without use IMCs,. specimen broke at HEAs/Al interface tensile-shear strength 237 MPa. achieved 12.86% higher than base metal AA 6061 75.57% lower steel.